Paul Crump

5 Questions 15 Answers 0 Followers

Questions related from Paul Crump

Does anyone have experience using neutral red dye for capture-recapture based estimates of population size in Wood frog larvae?

Specifically, I curious is anyone has experimented with different dye concentrations, staining duration's, and how long the larvae remained distinguishable from non-stained individuals. The...

26 February 2015 1,612 7 View

How do you calculate the number of true negatives using an automated acoustic classifier?

I’m working on an automated frog call detection problem. I’m trying to determine a good way to estimate the number of true negatives within a given sample. The true and false positives, and the...

01 February 2015 7,788 3 View

Why do I get identical elasticity values for multiple vital rates in a projection model of amphibian PVAs?

Hello, I'm looking at elasticity values from a range of amphibian PVA's. There are lots of elasticities values within models that turn out to be the same, not similar, but exactly the same to 10...

19 November 2014 7,861 7 View

How do you estimate the abundance of a over-dispersed animal and factor in heterogeneous detection probabilities caused by different patch sizes?

We are sampling tadpoles in wetlands to determine mortality as a function of a few different biotic and abiotic variables. We know (roughly) how many tadpoles are in the wetlands because we count...

30 September 2014 7,848 5 View

Does anyone have experience with area based extrapolation and estimation methods?

I have taken a series of fixed area counts within a known area and I want to extrapolate out to obtain an estimate of total N for the area. There is overdispersion, so I do not think a mean is...

18 August 2014 4,853 8 View